I've had this for 14 months and it went through a pretty rough winter with no issues. It sits in the sun most of the day as there are no trees over it so it does get extremely hot inside during the summer. I leave the door open most times so never rigged up the roll-up system that is provided. It needs to be well anchored as it is big enough to be a sail. I knew this from experience with other garages. It tends to let the snow slide right off without needing to chase it with a broom. Only disappointment is the lifespan of the cover as the other Garage-In-A-Box I have lasted much better (frame design is better on the Garage-In-A-Box SUV however). The cover just split after a heavy rain (no wind) the other day. My only complaint so far.